It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 166 142 012 is not a prime number.
For example, 166 142 012 can be divided by 2: 166 142 012 / 2 = 83 071 006.
For 166 142 012 to be a prime number, it would have been required that 166 142 012 has only two divisors, i.e., itself and 1.
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166 142 012 is an even number, because it is evenly divisible by 2: 166 142 012 / 2 = 83 071 006.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 166 142 012 is about 12 889.609.
Thus, the square root of 166 142 012 is not an integer, and therefore 166 142 012 is not a square number.
The square of a number (here 166 142 012) is the result of the product of this number (166 142 012) by itself (i.e., 166 142 012 × 166 142 012); the square of 166 142 012 is sometimes called "raising 166 142 012 to the power 2", or "166 142 012 squared".
The square of 166 142 012 is 27 603 168 151 408 144 because 166 142 012 × 166 142 012 = 166 142 0122 = 27 603 168 151 408 144.
As a consequence, 166 142 012 is the square root of 27 603 168 151 408 144.
166 142 012 is a number with 9 digits.
The multiples of 166 142 012 are all integers evenly divisible by 166 142 012, that is all numbers such that the remainder of the division by 166 142 012 is zero. There are infinitely many multiples of 166 142 012. The smallest multiples of 166 142 012 are: